Vienna Posted November 18, 2020 Share Posted November 18, 2020 Hi! I want to change my photos from 72 DPI to 300 DPI for printing purposes. However when I tried to change the DPI, it seemed to work in Affinity but when I checked the edited photo's DPI in Preview (I use Mac), it still shows as 72 DPI. However, when I compared and zoomed in on the original photo and the edited photo with the 300 DPI, the edited photo seems much more clearer and less pixelated than the original, and its image size in pixels became bigger as well. The procedure I did the DPI change was: Select your image. Select Document > Resize document. Change the dpi from 72 to 300 (Resample is ticked). Resample method is Bicubic. Click OK. What can I do to be able to change the DPI to 300 for printing? Thanks! Quote Link to comment Share on other sites More sharing options...
Chris26 Posted November 18, 2020 Share Posted November 18, 2020 6 hours ago, Vienna said: I want to change my photos from 72 DPI to 300 DPI for printing purposes. OK, i may be missing something here but if you import an image at 72 ppi and simply change the resolution to 300 ppi you will get a much smaller image but definitely print ready. I do not know what you mean by previewing it, in what may I ask? Did you export it as a 300 ppi image after changing the resolution? In other words save it as Jpeg or PNG or something and then preview that saved image? May I ask what you understand about changing resolutions of an image and enlarging them? This is Photoshop, but the concepts are exactly the same in Affinity and for any software that re-sizes, don't know if this helps? https://guides.lib.umich.edu/c.php?g=282942&p=1888163 Quote Microsoft - Like entering your home and opening the stainless steel kitchen door, with a Popup: 'Do you really want to open this door'? Then looking for the dishwasher and finding it stored in the living room where you have to download a water supply from the app store, then you have to buy microsoft compliant soap, remove the carpet only to be told that it is glued to the floor.. Don't forget to make multiple copies of your front door key and post them to all who demand access to all the doors inside your home including the windows and outside shed. Apple - Like entering your home and opening the oak framed Kitchen door and finding the dishwasher right in front you ready to be switched on, soap supplied, and water that comes through a water softener. Ah the front door key is yours and it only needs to open the front door. Link to comment Share on other sites More sharing options...
Richard S. Posted November 18, 2020 Share Posted November 18, 2020 Hi Vienna, I obviously have no idea how much you know about resolution etc. so please excuse me if I'm advising you on matters which you already know about. Example: If you have a 1000px X 1000px image @ 72dpi, and then simply increase the resolution to 300 dpi - the image will shrink in size but become sharper. HOWEVER - if you increase the dpi to 300 but still want the image to be the same dimensions (1000 x 1000) the image will pixelate badly. With regards to resolution (dpi) - an image can always be downscaled (resulting in a sharper but smaller image) - but not upscaled, without degradation. This is obviously a simplified answer, as there are multiple factors with regards to resolution, but I hope this helped somehow. Quote High-End Photographic Prints Link to comment Share on other sites More sharing options...
John Rostron Posted November 18, 2020 Share Posted November 18, 2020 If you use resize to simply change the dpi from 72 to 300 without Resampling, then the pixel dimensions are unchanged but the physical dimensions will be reduced. It will not affect any pixillation when viewed at 100%. John Quote Windows 11, Affinity Photo 2.4.2 Designer 2.4.2 and Publisher 2.4.2 (mainly Photo). CPU: Intel Core i5 8500 @ 3.00GHz. RAM: 32.0GB DDR4 @ 1063MHz, Graphics: 2047MB NVIDIA GeForce GTX 1050 Link to comment Share on other sites More sharing options...
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